A high performance Li-ion capacitor constructed with Li4Ti5O12/C hybrid and porous graphene macroform
A high performance Li-ion capacitor constructed with Li4Ti5O12/C hybrid and porous graphene macroform
复制标题
由 Li4Ti5O12/C 混合材料和多孔石墨烯宏观结构构成的高性能锂离子电容器
DOI：
10.1016/j.jpowsour.2015.02.028
复制
发表时间：
2015-05-15
影响因子：
9.2
通讯作者：
Yang, Quan-Hong
中科院分区：
文献类型：
--
作者：
Ye, Ling;Liang, Qinghua;Yang, Quan-Hong
以Li 4 Ti 5 O 12/C杂化材料为负极，三维多孔石墨烯（PGM）为正极，制备了锂离子电容器（LIC）。在将电极材料的质量比（m（+）/m（-））优化为2之后，所制造的LIC在1.0-3.0 V的电压范围内提供72 Wh kg（-1）的最大能量密度和650 W kg（-1）的功率密度。此外，即使在8.3kW kg（-1）的高功率密度下，LIC的能量密度也达到40 Wh kg（-1）。在10A·g（-1）的高电流密度下，LIC具有良好的循环稳定性，1000次循环后的保持率为65%，表明LIC在储能方面具有巨大的应用潜力。(C)2015 Elsevier B. V.版权所有。
A Li-ion capacitor (LIC) is constructed with Li4Ti5O12/C hybrid as the negative electrode and 3D porous graphene macroform (PGM) as the positive electrode. After optimizing the mass ratio (m(+)/m(-) of the electrode materials with the value of 2, the as-fabricated LIC delivers a maximum energy density of 72 Wh kg(-1) with the power density of 650 W kg(-1) in a voltage range of 1.0-3.0 V. Furthermore, the energy density of the LIC reaches 40 Wh kg-1 even at a high power density of 8.3 kW kg(-1). More significantly, the LIC exhibits a good cycling stability with the retention of 65% after 1000 cycles at a high current density of 10 A g(-1), suggesting great potential application in energy storage of the LIC. (C) 2015 Elsevier B.V. All rights reserved.